Antenna structure

Abstract

An antenna structure is suitable for being embedded in an electronic device. The antenna structure includes a grounding plate, a radiating plate, and a shorting plate. The grounding plate has a body and a bending portion extending from the body. The radiating plate is disposed above the grounding plate and is extended with an auxiliary radiating plate. The gap between the bending portion and the radiating plate is less than that between the body and the radiating plate. In addition, one end of the shorting plate is connected to the grounding plate, and the other end of the shorting plate is connected to the radiating plate.

1. An antenna structure, suitable for being embedded in an electronic device, comprising:
 a grounding plate, having a body and a bending portion extending from a first side edge of the body; 
 a radiating plate, disposed above the grounding plate, wherein a gap between the bending portion and the radiating plate is less than that between the body and radiating plate; and 
 a shorting plate, with one end connected to the first side edge of the body of the grounding plate and another end connected to the radiating plate, wherein the shorting plate has a feed point electrically connected to a feed line; 
 wherein one end of the feed line is connected to the feed point, and another end of the feed line is connected to a signal source, the bending portion is located between the feed line and the radiating plate for preventing a resonance effect between the grounding plate and the radiating plate from being affected by electromagnetic waves generated by the feed line. 
 
   
   
     2. The antenna structure as claimed in  claim 1 , wherein the grounding plate is parallel to the radiating plate, and the shorting plate is perpendicular to the grounding plate and the radiating plate. 
   
   
     3. The antenna structure as claimed in  claim 1 , wherein the body has a second side edge opposite to the first side edge, the radiating plate has a third side edge and a fourth side edge opposite to the third side edge, and the shorting plate is connected between the first side edge and the third side edge. 
   
   
     4. The antenna structure as claimed in  claim 3 , wherein the shorting plate has a first slot adjacent to the third side edge of the radiating plate. 
   
   
     5. The antenna structure as claimed in  claim 3 , further comprising an auxiliary radiating plate connected to the fourth side edge of the radiating plate. 
   
   
     6. The antenna structure as claimed in  claim 5 , wherein the auxiliary radiating plate is perpendicular to the radiating plate. 
   
   
     7. The antenna structure as claimed in  claim 5 , wherein the auxiliary radiating plate and the radiating plate are integrally formed. 
   
   
     8. The antenna structure as claimed in  claim 5 , wherein the auxiliary radiating plate comprises a second slot adjacent to the fourth side edge of the radiating plate. 
   
   
     9. The antenna structure as claimed in  claim 8 , wherein the auxiliary radiating plate further comprises a third slot disposed at one side of the second slot. 
   
   
     10. The antenna structure as claimed in  claim 1 , wherein the bending portion has a first plane and a second plane opposite to the first plane, the first plane faces the radiating plate, and the feed line is disposed on the second plane. 
   
   
     11. The antenna structure as claimed in  claim 1 , wherein the antenna structure receives/sends signals at a frequency range of 880-960 MHz and a frequency range of 1710-2170 MHz. 
   
   
     12. The antenna structure as claimed in  claim 1 , wherein the grounding plate has a length of 55 mm and a width of 5 mm. 
   
   
     13. The antenna structure as claimed in  claim 1 , wherein the radiating plate has a length of 55 mm and a width of 5 mm. 
   
   
     14. The antenna structure as claimed in  claim 1 , wherein the bending portion extends from the body towards the radiating plate to a predetermined height and then extends parallel to the radiating plate to a predetermined distance.